Mold



R. P. M. DAVIS MOLD Filed Oct. 4. 1922 Patented Oct. 21, 1924.

UNITED STATEs BOY P. M. DAVIS, O'F MOUNT UNION, PENNSYLVANIA. i

AppIicaton filed. October 4, 1922. Serial No. 592,224.

To all whom t may cowcm:

Be it known that RoY P. M. DAvis, a citizen of the United States ofAmerica, residing at Mount Union, in the county of Huntingdon and Stateof Pennsylvania, has invented certain new and useful mprovements inMolds, of which the following is a specification.

My invention relates to molds for brick making machines.

The principal object of the invention is to provide means forcompensating for the wearing away of the projecting edges of the moldand mold partition.

Other and further objects of the inVen-` tion will be in part describedand in part obvious as the description is proceeded with.

In the accompanying drawings' forming part of this specification:

Figure 1 is a side elevation of my invention' Figure 2 is an end view,the trunnions and bearings being omitted.

Figure 3 is a detail View of mold actuating means and Figure 4 is a topplan view of the mold.

Referring more particularly to the drawings the mold 1, is formed in twoparts 2 and 3 which may for convenience be termed the base and uppersections respectively. The base or lower section 2, is provided withledges or fianges 4, at each end which are embraced by inverted U-shapedyoke members 5, which are bolted to the side plates 7,

' ofthe upper section by means of bolts 8 extending through the extendedends of the side plates and through slots 30 in the legs of the member5. Transverse members or cross heads 9, are bolted to the legs of themembers 5, by means of bo-lts 10, and the two sections are connectedtogether by vertically disposed bolts 11, which pass loosely through thecross heads 9, and through the fianges or ledges 4, lock nuts 12,per'rnittingl of the two Sections of the mold being adjusted toward oraway from each other to vary the thickness of the bricks. Nuts 35 on thelower ends of the bolts 11 support the lower section 2 when the mold isin Figure 1 or upright position.

The lower section 2, is formed with upstanding plungers 13, whichproject partially into the brick molding compartments 14, of the uppersection 3. These plungers receive the charge of mud from any suitablesource (not shown) and also serve to eject the finished brick.

Bearings 15, are bolted to the inverted U- shaped members by means ofbolts 10. These bearings receive and have keyed therein the inner endsof short stub shafts 17 and 18, which in turn are journaled in the moldsupporting arms 19 and 20, connected to any suitable support (notshown). The stub shaft 17, has keyed thereon at one end a spoked wheel22, by means of which wheel the mold support is oscillated atpredetermined intervals to dump the molded bricks, a rack bar 23, beingemployed for this purpose. This rack bar 23, is actuated atpredetermined intervals by any suitable means (not shown) tooscillatethe mold to inverted or dumping position. V

The ejection of the bricks from the mold compartments automaticallytakes place as the mold supports are oscillated to dumping position.This is caused by the section 2, of the mold support dropping by gravitytowards section 1, thereof, it being noted that the section 2, is freeto move'with the threaded bolts or rods 11, the cross heads 9 serving asguides during this movement. This movenient of the section 2,precipitates the plungers 18, through the mold compartments 14, therebyejecting the brick therefrom, onto the dump table (not shown).

The. section 3 comprises the side plates 7 which overlap the guidemembers 5, and the transverse partitions 27 extending between the plates7 forming the mold compartments 14. The space between the guide members5 forms a pocket or space 24 in which the partitions 27 seat, the bolts8, normally resting upon the bottom of recesses 30 and maintaining theupper edges of the side plates 7 and partitions 27 slightly above thetop of the guide members 5.

The upper edges of the molds including the partitions 27, are subject togreat wear which is compensated foras follows: As wear takes place, themold is removed, resurfaced to smooth the rough worn edges and thenreplaced. This wearing and resurfacing reduces the depth of the mold,bringing the top edges of the latter closer to the ends of the plungers.This is then offset by sorewing home bolts 28, threadedly mounted in thelugs 29, in the cross heads 9, and arranged to engage with their upperends the four lower corner edges of the side plates 7 resurfacing of themold. If desirable, after the upper edges of one face of the moldbecomes Worn, the mold can be' taken out and reversed, thus preventing`an unWorn edge above the top of the mold supporting yokes 5. To this endthe molds are made of sufiicient height to normally project aconsiderable distance above the top of the mold supporting yokes 5. Itwill of course, be understood that the step may be dispensed With, thisstep in any event being unnecessary until both edges or surfaces of themold become badl Wornor scarred.

VVhat I claimis:

l, In a brick making machine, a two part moldcomprising a base sectionVand an upper section, mold supporting members between which both ofVsaid moid sections seat and are supported for relative movement, andmeans for adjustng said upper mold section vertically With respect tosaid supporting` members.

' 2. Infa brick making machine, mold supporting members, a two part moldcomprising a base section 'and an open ended re- Versible upper moldsection, both of said Sections being supported by said supportinmembers, and means for adjusting the up-V per section reiativcly to thesaid supporting members.

3. In a brick making` machine, an open ended mold, means for supportingsaid mold, adjustabie means in said supporting,r means bearing againstthe bottom edge of said moid for regulating the height of said mold Withrespect to said supportingl means.

4. In a brick making machine, a two part mold comprising a base and anupper section, said upper section being of open ended skeleton formationand means common to both Sections for supporting said Sections forreiative movemcnt, the said upper section adapted to normally project aconsid erable distance above said supporting means.

5. In a brick making machine, a pair of inverted U-shaped moldsupporting members, an open ended mold seated between said members andprojecting thereabovc. and means for adjusting the height of said moidWith respect to said supporting memr bers.

In testimony whereof I afiix my signature in pres'ence of a Witness.

